Updated to use streams, to allow a proper HTTP header to be sent to Poslaju. User-Agent is 'osCommerce Poslaju Shipping Module' and Referer is the name of your website, from HTTP_SERVER constant.

I have met the regional manager for Pos Malaysia, and he thought it was ok to use the website this way. I'd still like to hear from their IT people - it would be great to have a page with just the result data on, rather than the 12K page this module parses.

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